divedeep1689
Aquarium Advice Addict
Hey guys i was watching a video on The great barrier reef, They mentioned in the video of the calcium carbonate for corals, Then they mentioned that they calcium carbonate they use is the same exact thing classroom chalk is made of. I searched the internet looking for articles that may contain information on using this in a reef tank, i found one college student who had experimented with it after researching but it never mentioned the results of his experiment.